The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 08, 2000
Filed:
Nov. 17, 1997
Applicant:
Inventors:
Yuji Segawa, Kawasaki, JP;
Kunihiko Gotoh, Kawasaki, JP;
Assignee:
Fujitsu Limited, Kawasaki, JP;
Primary Examiner:
Int. Cl.
CPC ...
H03B / ; H03K / ; H03K / ; H03K / ;
U.S. Cl.
CPC ...
331-2 ; 331 / ; 331-8 ; 331 17 ; 331 25 ; 331 34 ; 331179 ; 327147 ; 327150 ;
Abstract
A correction circuit for controlling a correction required circuit includes an oscillator circuit, and a logic circuit which counts an oscillation frequency of the oscillator circuit and thus produces a control signal which causes the oscillator circuit to oscillate at a constant frequency. The control signal changes element values of elements of the oscillator circuit and the correction required circuit so that characteristics of the oscillator circuit and the correction required circuit can be controlled.